Technology of Production: The Master Potter ´Ali Muhammad Isfahani: Insights into the Production of Decorative Underglaze Painted Tiles in 19th Century Iran

From Ore to Pigment: A Description of the Minerals and an Experimental Study of Cobalt Ore Processing from the Kāshān Mine, Iran

“…Samples of Ali Mohammad's raw materials, held at the Victoria and Albert Museum, have been analysed by Reiche and Voigt (, 524–6) and provide a valuable basis for comparison. Among this collection, four boxes have been labelled in relation to cobalt (or lājvard , as it was commonly referred to in Persian): lājvard colour ( reng‐e l ā jvard, from the neighbourhood of Kāshān; box no.…”

“…13). According to Reiche and Voigt's (, 511) analysis, the composition of box no. 12 (essence of lājvard) was unrelated to any type of cobalt ore, showing high lead but no cobalt content.…”

“…The nature of the būreh‐i Yezd and tangār was discussed in Matin and Pollard (, 179–80). On the basis of the chemical analyses of Ali Mohammad's samples (Reiche and Voigt , 524–6), the būreh‐i Yezd and tangār were effectively borax (Na 2 B 4 O 7 ·10H 2 O), with tangār being a more homogenous and purified form of būreh‐i Yezd . The deposit situated in Khatūn‐Ābād (formerly Deh Shotorān), 31 km south east of Shahr‐e Bābek—today in Kermān province, but previously in Yezd province—was suspected to be the source for the būreh‐i Yezd and tangār used by Ali Mohammad.…”

Chemical and Mechanical Characterisation of White Earthenware Glazes from the Johnston‐Vieillard Manufactory (France, 19th Century)

“…The difficulty in procuring raw supplies and the price of raw materials, which may have increased accordingly, could explain why the quantity of boron in glazes around 1885 decreased in the Vieillard & Co factory (Table 2). On the contrary, use of borax (also called tanagar) is reported in a 19th century treatise by the potter named Ali Muhammad Isfahani, who worked in Tehran (Ali 1888;Reiche and Voigt 2012).…”